新股发行时向社会公众发行的部分不少于公司拟发行股本总额的（）。 ["35%","15%","25%","50%"]
生物放大
Which of these tables is used by an LSR to perform a forwarding lookup for a packet destined to an address within an RFC 4364 VPN？（） ["CEF","FIB","LFIB","IGP"]
增资发行股票时规定距前一次公开发行股票的时间不少于（）。 ["6个月","一年","18个月","两年"]
剧烈运动后容易出现重力性休克，应该（） ["立即停止运动，坐下休息","立即补充水分，保持身体内循环稳定","慢慢跑一段距离，做一些深呼吸和轻微运动","不要立即停下，仍然做一些大幅度动作练习"]
简述协同教学。
